And the part of the Bible he was talking about isn't even in the Bible. It says David had concubines, but it doesn't say how many.

It does tell us that Solomon had 300 concubines (in addition to 700 wives). Solomon expanded on his father's excesses, so David probably had a more modest number of women in his household.

I'm sure Fox personalities wouldn't really care that atheists know more about the Bible than they do. My money is on most of them not actually believing anything they say on TV. (Remember those text messages about Trump?)